參數(shù)資料
型號: LH540215
廠商: Sharp Corporation
英文描述: 512 x 18 / 1024 x 18 Synchronous FIFO
中文描述: 512 ×一千〇二十四分之一十八× 18同步FIFO
文件頁數(shù): 35/48頁
文件大小: 423K
代理商: LH540215
540215-26
Q
0
- Q
17
REN
RCLK
HF
OE
WEN
D
0
- D
17
WCLK
DATA READ
t
DS
DATA IN OUTPUT REGISTER
t
DS
DATA WRITE 1
DATA WRITE 2
t
ENS
t
ENH
t
ENH
t
ENS
t
SKEW2(1)
t
SKEW2(1)
t
HFS
t
HFS
t
HFS
t
A
NOTE:
1. t
is the minimum time between a rising WCLK edge and a
rising RCLK edge for HF to change predictably during the current
clock cycle. If the time between the rising edge of WCLK and the
rising edge of RCLK is less than t
, then it is not guaranteed
that HF will change state until the next following RCLK edge.
2. The internal state of the FIFO:
At , half+1 words.
At B
At C
LOW
Enhanced Operating Mode Timing Diagram
A
B
C
t
ENS
t
ENH
Figure 20. Half-Full-Flag Timing, When Synchronized
to Output Port(Enhanced Operating Mode)
TIMING DIAGRAMS (cont’d)
512 x 18/1024 x 18 Synchronous FIFO
LH540215/25
35
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